No i don t fix caravan heaters but to help you here is how i fixed mine.
Truma water heater not working on gas.
Apparently the manufacturers know the problem and are endeavoring to fix it.
Truma corp 2800 harman dr elkhart in 46514 usa.
I was having problems with my heater.
My model has settings at 500w 1kw and 2kw.
The burner switches off automatically when the faucet is closed to conserve lp gas.
A comfortable water temperature at the faucet or shower is achieved by mixing with cold water.
If you are lacking heat by searching the web i found that there are several problems that seem to afflict these heaters 1 relays not working.
Check for gas or electrical supply issues.
The truma aquago basic does not have frost protection and should not be used or filled with water when there is a danger of freezing.
If they seem to be malfunctioning as well check the main regulator pressure.
A heavier gauge metal is being tested as well as a better pressure reduction mechanism.
If your hws runs on gas your other gas powered appliances can give you a clue as to whether gas is reaching your system.
1 855 558 7862 fax.